Introduction
Thank you for choosing the Mylyis Cordless Hair Straightener Brush. This portable and innovative device is designed to provide efficient hair straightening with the convenience of cordless operation. Featuring advanced MCH heating technology, negative ion release, and multiple temperature settings, it helps you achieve smooth, shiny hair anywhere, anytime.

Figure 1: Mylyis Cordless Hair Straightener Brush
Safety Information
Please read all safety instructions carefully before using the appliance. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Avoid contact with skin to prevent burns. The heated bristles can reach high temperatures.
- Keep away from water and flammable materials. Do not use near bathtubs, showers, basins, or other vessels containing water.
- Unplug or turn off the device after each use and before cleaning.
- This appliance is UL certified for product safety and battery safety, ensuring reliable operation.
- Features an anti-scald design and good heat insulation to minimize risk during use.
- Equipped with a child lock to prevent unintentional activation by children.

Figure 2: UL Certified for Safety
Product Overview and Features
The Mylyis Cordless Hair Straightener Brush combines convenience with advanced styling technology. Key features include:
- Cordless Design: Offers freedom of movement and portability for styling anywhere.
- High Temperature Capability: Heats up to 410°F for effective straightening.
- MCH Heating Element: Ensures fast and uniform heating with stable temperature control.
- Ceramic Coated Teeth: Smooth ceramic material reduces friction by 80% for effortless gliding through hair.
- Negative Ion Technology: Releases up to 230 million negative ions during use, making hair smoother and shinier, and reducing frizz.
- Safety Lock Function: Prevents accidental activation during storage or travel.
- High-Capacity Battery: Equipped with 6400mAh (3200mAh x 2) built-in rechargeable battery, providing approximately 34 minutes of use at 410°F, sufficient for 2-3 styling sessions.

Figure 3: Internal Components and Anti-Scald Design

Figure 4: Negative Ion Release for Smoother Hair
Setup
Charging the Device
Before first use, fully charge the hair straightener brush. The device comes with a Type-C charging port.
- Connect the provided Type-C charging cable to the device and a suitable power adapter (not included).
- The battery indicator on the display will show charging status.
- A full charge typically lasts for approximately 34 minutes of continuous use at the highest temperature setting.

Figure 5: Charging Port and Battery Indicator
Initial Use and Safety Lock
The device features a travel safety lock to prevent accidental activation.
- To unlock the device, press the security key (safety button) for 2 seconds. The display will show "Loc" when locked and unlock when held.
- Ensure the device is unlocked before attempting to power it on or adjust settings.
Operating Instructions
Power On/Off and Temperature Selection

Figure 6: Power and Temperature Buttons
- Turn On: Press the security key (safety button) for 2 seconds to unlock the device. The display will show "Loc" initially, then unlock.
- Select Temperature: Press the Power (temperature) button to cycle through the available temperature settings.
- Turn Off: Press and hold the temperature key for 2 seconds to turn off the device.
Temperature Settings
The Mylyis Cordless Hair Straightener Brush offers 6 temperature modes to cater to different hair types:

Figure 7: Temperature Guide for Different Hair Types
Temperature (°F) | Recommended Hair Type |
---|---|
410°F | Recommended for most effective straightening |
390°F | Thick/Curly/Wavy hair |
375°F | Slightly curly hair |
355°F | Dyed/Dark/Color hair |
340°F | Soft/Thin hair |
320°F | Child-friendly hair |
Hair Straightening Process
For best results, ensure your hair is dry and detangled before use.
- Select the appropriate temperature setting for your hair type. Allow the brush to heat up completely.
- Take a small section of hair and slowly brush through it from root to tip. The design makes it easier for hair to enter the heating zone.
- Repeat the process for all sections of hair until desired straightness is achieved.
- The negative ion function will automatically activate, contributing to smoother and shinier hair.

Figure 8: How to Easily Brush and Straighten Hair

Figure 9: Example of Hair Straightening Results
Maintenance
Proper maintenance ensures the longevity and optimal performance of your hair straightener brush.
- Cleaning: Ensure the device is turned off and completely cooled down before cleaning. Use a soft, damp cloth to wipe the bristles and body. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the brush in a cool, dry place, away from direct sunlight and moisture. Utilize the travel safety lock function when storing or transporting the device to prevent accidental activation.
- Battery Care: To maintain battery health, avoid completely draining the battery frequently. Recharge the device regularly, even if not in frequent use.
Troubleshooting
If you encounter any issues with your Mylyis Cordless Hair Straightener Brush, please refer to the following common solutions:
- Device Not Turning On: Ensure the device is fully charged. Check if the safety lock is disengaged by pressing the security key for 2 seconds.
- Not Heating Up: Verify that the device is powered on and a temperature setting has been selected. Allow a few moments for the MCH heating element to reach the set temperature.
- Battery Drains Quickly: Ensure the device is fully charged before use. Battery life can vary based on temperature setting and hair thickness. If issues persist, contact customer support.
- Hair Not Straightening Effectively: Ensure hair is dry and detangled. Use smaller sections of hair and brush slowly. Increase the temperature setting if your hair type requires higher heat.
Specifications
Feature | Specification |
---|---|
Product Dimensions | 7.87 x 1.77 x 1.77 inches |
Weight | 1.01 Pounds |
Batteries | 2 AAA batteries required (for internal components, not user replaceable) |
Manufacturer | Mylyis |
ASIN | B0DJL8MM4D |
Country of Origin | China |
Color | Black |
Material | MCH Faster heat, Aluminum, Plastic, Acrylonitrile Butadiene Styrene |
Wattage | 10W |
Power Source | Battery Powered |
Warranty and Support
Mylyis products are manufactured to high-quality standards. For information regarding warranty coverage, please refer to the warranty card included with your purchase or visit the official Mylyis website.
For technical support, troubleshooting assistance, or any product-related inquiries, please contact Mylyis customer service through the contact information provided on the product packaging or the brand's official online channels.